Results 1 to 10 of about 11,778 (264)

Potential impact of contrails on solar energy gain [PDF]

Atmospheric Measurement Techniques, 2015
The effect of contrails on global short-wave radiation (sum of direct and downward diffuse solar radiation) and on solar energy gain was investigated. The study was performed during days with high contrail persistence and focused on situations where the ...
P. Weihs, M. Rennhofer, D. J. Baumgartner, J. Gadermaier, J. E. Wagner, J. E. Gehring, W. Laube   +6 more
doaj   +1 more source

Simulation of Reflectance and Vegetation Indices for Unmanned Aerial Vehicle (UAV) Monitoring of Paddy Fields

Remote Sensing, 2019
Reflectance and vegetation indices obtained from aerial images are often used for monitoring crop fields. In recent years, unmanned aerial vehicles (UAVs) have become popular and aerial images have been collected under various solar radiation conditions.
Naoyuki Hashimoto, Yuki Saito, Masayasu Maki, Koki Homma   +3 more
doaj   +1 more source

Novel feature selection based ANN for optimal solar panels tilt angles prediction in micro grid

Case Studies in Thermal Engineering
Predicting PV system electricity output is necessary for daily operational management and annual power system planning when integrating solar collector-based photovoltaic (PV) stations into micro grids.
Amit Kumar Yadav, Vibha Yadav, Ashwani Kumar, Raj Kumar, Daeho Lee, Tej Singh   +5 more
doaj   +1 more source

Modeling the Incident Solar Radiation of the City of N’Djamena (Chad) by the Capderou Method

International Journal of Photoenergy, 2020
Chad is like many African countries with no meteorological station at the moment to measure solar radiation throughout the country. Thus, theoretical models are used to estimate incident solar radiation.
Mahamat Hassane Babikir, Donatien Njomo, Mahamat Barka, Mahamoud Youssouf Khayal, Deli Goron, Venant Sorel Chara-Dackou, Tefouet Tiague Martial, Kamta Legue Daniel Romeo, Gram-shou Jean Paul, Nzadi Siwe Elie   +9 more
doaj   +1 more source

Long-Term Weather Data Measurements From A Danish Climate Station And The Weather’s Influence On The Thermal Performance Of Solar Collectors

Slovak Journal of Civil Engineering, 2015
A weather data evaluation from a climate station in Lyngby, Denmark, was carried out. Twenty years of measurements show that the increase in global radiation was almost 3.5 kWh/m2 per year, corresponding to a growth of the yearly global radiation of 7 ...
Skalík Lukáš
doaj   +1 more source

Thermal processes affected by carbon dioxide near ground surface

Results in Engineering
This study provides penetrative investigation of the effects of carbon dioxide concentration on time-dependent temperature and energy fluxes on the ground surface subject to solar irradiation.
Peng-Sheng Wei, Wei-Cin Chen, Chieh Lee, Te-Chuan Ting, Hsuan-Han Chiu, Yin-Chih Hsieh, Yi-Cheng Tsai, David Su   +7 more
doaj   +1 more source

Estimating Hourly Direct and Diffuse Solar Radiation for the Compilation of Solar Radiation Distribution Maps

Journal of Agricultural Meteorology, 2005
This paper presents a new method for estimating hourly direct and diffuse solar radiation. The essence of the method is the estimation of two important factors related to solar radiation, atmospheric transmittance and a dimensionless parameter, using empirical and physical equations and data from general meteorological observation stations. An equation
openaire   +2 more sources

Performance Evaluation of Models Established for the Estimation of Diffused Solar Radiation: Case Study Lahore, Pakistan

International Journal of Economic and Environment Geology, 2019
A suitable design of solar power project requires accurate measurements of solar radiation for the site of investigation. Such measurements play a pivotal role in the installation of PV systems. While conducting such studies, in general,
Saif ur Rehman, Muhammad Shoaib, Imran Siddiqui, S. Zeeshan Abbas
doaj  

Transport processes and ground temperature affected by solar irradiation through the troposphere layer

Results in Engineering
This study predicts transport phenomena influenced by solar irradiation across the troposphere. The imbalance between solar irradiation and long-wavelength radiation emitted by the Earth's surface contributes to global warming and the frequency and ...
Peng-Sheng Wei, Wei-Cin Chen, Te-Chuan Ting, Chieh Lee, Yi-Cheng Tsai, Yin-Chih Hsieh, Hsuan-Han Chiu, David Su   +7 more
doaj   +1 more source

Measurements of Diffuse Solar Radiation at Delhi and Poona

MAUSAM, 1963
The paper discusses the diurnal and seasonal variations of diffuse solar radiation on a horizontal surface from measurements made during 1958 and 1959 at Poona and Delhi. Diffuse radiation is maximum during the summer and monsoon months, May S as a re.3ult of increased turbidity in summer and clouding during monsoon.
ANNA MANI, OOMMEN CHACKO
openaire   +2 more sources